Postcards are thick and typically rectangular pieces of paper that were traditionally used to send notes from a destination. The front of a postcard is usually decorated with a photo of the place, while the back has space for a message.

Today, postcards are popular among tourists; they not only serve as cheap, lightweight momentos, but also come in multiple designs wherever they’re sold. Postcards are ubiquitous and can be purchased anywhere from museums in large metropolitan cities to the side of the street in small villages. While many people still send postcards for fun, a lot of people also collect postcards as a fun artifact of somewhere they’ve traveled to.

The previous review gives more historical context about postcards and focuses on the utility of postcards.

Previous Review:
Postcards are impressive in their efficacy as vehicles for communication. Stamp a rectangular piece of thick paper and you can send off a note–no envelope required.
While post card production started in the late 18th century, the first modern photo postcard was sent in 1940. The customization of postcards enables you to personalize your message. You can print a postcard with a personal photo or buy one that has a design you like. Much can be conveyed in the visuals.
It is a major design feat to be able to pack so much information into this little card: to whom it is being sent, the message, the return address, etc.